<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title>CSS Test: Empty :lang selector</title>
        <link rel="author" title="Microsoft" href="http://www.microsoft.com/" />
        <link rel="help" href="http://www.w3.org/TR/CSS21/selector.html#lang" />
        <meta name="flags" content="invalid" />
        <meta name="assert" content="Language identifier cannot be empty." />
        <style type="text/css">
            :lang(), div
            {
                color:red;
            }
        </style>
    </head>
    <body>
        <p>Test passes if there is no red visible on the page.</p>
        <div lang="en-us">Filler Text</div>
    </body>
</html>